Fix windows cross compilation of basement

Author: hamishmack

nix/project.nix

@@ -96,6 +96,15 @@ let
             plutus-tx-plugin.ghcOptions = [ "-Werror" ];
           };
         }
+        ({ lib, pkgs, ... }: lib.mkIf (pkgs.stdenv.hostPlatform.isWindows) {
+          # This fixed basement compilation error on Windows (ref: https://ci.iog.io/build/8529222/nixlog/1)
+          # ```
+          # Preprocessing library for basement-0.0.16...
+          # Size.hsc:126:30: error: initialization of ‘long long int’ from ‘void *’ makes integer from pointer without a cast []
+          # compilation failed
+          # ```
+          packages.basement.configureFlags = [ "--hsc2hs-option=--cflag=-Wno-int-conversion" ];
+        })
       ];
     });
 in